Just as an aside, the terms rifle, pistol, gun, or even firearm are NOT in the 2nd Amendment. The term is "arms".
If you look up the definition of "arms" in the 18th century you will find that the definition was, more or less, anything that a person wears or carries for his/her defense, or, and this is the best part, "takes in his/her hands as a weapon". So, from a legal perspective, it matters not one hoot what the State of Washington calls an "assault rifle" except and unless judges, or Justices, redefine the term "arms".
This is certainly off the original topic so I'll stop there.
But I do appreciate learning the history of one Vern Miller. Fascinating criminal from the Depression era. A nasty guy indeed!
The movie about Vern Miller was mostly filmed in Bessemer, Alabama.